Timeline: The biker gang attack on Alexian Lien

A pack of motorcyclists head north on the West Side Highway near 125th Street in Harlem about 2:30 p.m. on Sept. 29, a sunny Sunday afternoon as Alexian Lien, his wife and their 2-year-old daughter are out for a drive in their black Range Rover.

The ride was organized by Jamie Lao of Queens, organizer of Hollywood Stuntz’s annual Hollywood Block Party, which overwhelmed Times Square in 2012.

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Biker Christopher Cruz, 28, of Passaic, NJ, slows down in front of the Range Rover in an apparent attempt to stop it, but the SUV rear ends him at slow speed, angering the mob.

Inside the Range Rover, Lien, 33, grows fearful for the safety of his wife, Rosalyn Ng, and their daughter. It was their wedding anniversary and they were out celebrating.

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As more and more of the bikers menacingly surround his SUV, a panicked Lien hits the gas and speeds off, running over Edwin Mieses, 26, of Lawrence, Mass., breaking his legs.

Lien flees northward in a desperate attempt to get away and protect his traumatized family.

Others remain at the scene and tend to the severely injured Mieses, whose family said was paralyzed from the waist down after he was struck by the SUV.

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The angry bikers rev up their motorcycles and start to give chase.

The high-speed chase continues as bikers close in on the Range Rover near the West 178th Street exit in Washington Heights.

Lien pulls off onto West 178th Street, with a biker in a silver-colored helmet, later identified as Reginald Chance, 37, of Brooklyn, hot on his tail.

Chance rips off his helmet and uses it to repeatedly smash Lien’s driver’s side window.

More of the bikers speed up and start smashing the SUV’s rear and side windows, close to where the couple’s baby is strapped into a car seat.

The bikers drag Lien from the vehicle and begin pummeling and kicking him into a bloody pulp.

The terrified Ng, whose window was also smashed, leans from the passenger’s seat and screams for help.

A pair of good Samaritans bravely steps in and shields the young father from further attack.

Lien lies on the roadway as the Samaritans stand guard over him.

The Columbia grad then staggers to his feat, bloodied and bruised.

The Post Tuesday, Oct. 1 front page coverage of the horrific attack, which sparked outrage across the nation.

The investigation begins, as the family’s battered Range Rover is towed on a flatbed truck to the NYPD’s 33rd precinct.

Alexien lien and his wife

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Mieses’ wife Dayana Mejia, left, and family lawyer Gloria Allred threaten legal action against Lien while showing an image of him in his hospital bed at St. Luke’s.

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A cuffed Reginald Chance is led into Manhattan Criminal Court for arraignment on gang assault on Saturday, Oct. 5.

The NYPD is hunting four more bikers in the heinous attack on a driver chased up the West Side Highway and beaten to a pulp in front of his terrified family, law-enforce­ment sources told The Post Tuesday.

Detectives, who have already made nine arrests in the case, have spent hours poring over video footage and have called in experts to pinpoint the makes and models of the motorcycles the men were riding during the Sept. 29 assault in Washington Heights, sources said.

Investigators then cross-referenced the identified bikes with the owners of such motorcycles throughout the New York area, according to police sources.

One of the motorcycles involved in the search is a unique $25,000 BMW, while the three others are priced between $12,000 and $13,000 and are so common that there are approximately 300 local registered owners for each, The Post has learned.

Cops have a long list of potential suspects, say sources, who add that the search has been an exhaustive process.

“They are in the beginning stages of going to every address to see what they can learn,” said one law-enforcement source. “It’s been crazy.”

The 33-year-old SUV driver, Alexian Lien, was surrounded by the biker mob as he was driving his wife and young daughter in their black Ranger Rover near 125th Street in Harlem on the late-September afternoon.

During an ensuing confrontation, the bikers smashed the SUV with their helmets and slashed its tires with a knife.

Lien peeled away, running over several bikers, one of whom was critically injured. A swarm of angry motorcyclists then chased Lien northbound on the West Side Highway for more than 50 blocks.

Due to his badly damaged tires, Lien was forced to exit at 178th Street, where the assailants stopped his SUV, ripped him out of the vehicle and savagely beat him in front of his terrified family.

The bikers already under arrest — including career criminal Reginald Chance, 37 — have been hit with various charges.

Several cops were among the dozens of bikers who took part in the rally, which kicked off in Brooklyn. But only one — undercover Detective Wojciech Braszczok, 32 — has been charged in connection with the assault.

Sources said authorities are contemplating arresting a 10th biker who was spotted by a witness pummeling Lien, but who was not caught on video.

What's Your Take?

Remind me to never go to NY! The bikers are definitely at fault. If you ride a bike you need to be extra cautious...you can't fix other people or make them accountable for your safety...you have to be responsible for yourself. Slowing down and surprising (huge crowd) a driver is YOUR fault! You need to calm down and realize your mistake. These people are assholes and it appears the NYPD is dragging their feet and letting most of them walk...

Unlike the author of the story says. Only one driver was run over. Only one driver clearly got off his bike and approached the SUV. And that biker was at the Meises who put himself in front of the SUV to impede it's progress, for whenever reasons. if you watch video closely you will see that right before The SUV takes off, there is someone pummeling the driver side window. The funniest thing is that Gloria Allred has a complete statement from her client before her client has even come into consciousness

The way to get this may dirty cops on the force is throught the affirmative action policy known as jamal crow whereby talented whites or Asians who have never been arrested are not given a job so some thugs can be hired instead

The police should line up the guys that are already charged and beat their head in until they cough up the names. Why should we pay for an investigation that is costing millions when we can get to the end of this toute de suite, with a little Enhanced Interrogation?

I guess the eternal affairs division is going to have their hands full boy oh boy. Cry title 7 employment discrimination, and be shrouded. All of the cops with their last names ending in vowels got away kudos!. That's what the city gets for hiring my kind yep. Bad employment record problem no problem your hired. You entered he country illegally no problem your hired!. A Bronx or Brooklyn jury said you didn't commit the crime even though there was over whelming evidence, and what was not discretionary a friend of mine who is retired from their applicant investigation section. He said they could not hire someone even though they didn't get convicted.

What a shame the multitude of cops who were at the scene, declined to perform their functions of arresting criminals. Guess none of the cop/bikers, want to 'snitch'? Can't the NYPD explain to these cops, that the Blue Wall of Silence doesn't extend to criminals?

YOu mean those law enforcement employees, who all admitted to being at the scene, have not cooperated with their NYPD brothers, to find these criminals? Cops are now protecting criminals, and not just criminals in the department. KKKelly should resign.

Its obvious we have a huge conspiracy here, involving multiple jurisdictions, multiple government employees and the risk to public safety is high by a racketeering influenced corrupt organization (RICO) - a criminal biker gang that MUST have some source of funds to operate??? the Feds have time to stick a hot iron up Stevie Cohen's @&&, and he may have robbed a few sheckles off other stock trader buddies in Connecticut - but he's not a cop who is risking a young families life - WHERE IS THE FBI and DOJ on this case? Afraid your going to find some more cops? Let's get them all off the force before someone is killed!!!

@Kelly Wills Why don't you give a rest. If you don't care, stfu. don't comment. the rest of us care about corrupt cops and ppl being beaten for no reason. But you be sure to chime in with your deep thoughts when we get to a topic that personally concerns you and is worthy of your consideration. TROLL

@Think4Yourself Cops are criminals themselves, don't you know....come one people wake up. These pigs issues tickets for no good reasons and harass everyday people. They get away with everything from something very minor like tinted windows and speeding to texting and driving while drunk....unless they get caught on camera by people like us....They are crooks and liars

@JBH@not bonita bondera I do know what I am talking about. Yes look who got off. Their only going to discipline them accept for The Euro garbage one. Did you bother to read the paper a few years ago when a retired Captain heading their recruitment unit stated how they circumvented hiring standards to hire my kind for the sake of diversity. What an embarrassment. Did you ever go into a Brooklyn courtroom and see who sits in these juries. They are no better than the people that they have arrested in the courthouse lockup . That's why the acquit, and let them back out on the streets.

@JBH@not bonita bondera Yes they will go through ez pass records phone records without warrants and make them talk. Yes they will be caught soon!. The Internal affairs will get them yes and soon . You'll see friend. I bet you they are even looking at the bridge and tunnels cameras to find every body.

@Stu Holmes @JoeyBaltimore Stu - let's see how nice your wife and kids are with their hands when they cut off Officer Pedro and Sgt. lopez and 300 of their off-duty friends drag your wife down an alley and exact street justice.. your the Idiot who votes the politicians into office in NYC who allows these scum to operate... any other state in the union - these guys wouldnt make it to jail...